Bruno Marchal wrote:
On 24 Nov 2014, at 11:35, Richard Ruquist wrote:
With MWI thinking, every detector will detect a photon at the same
energy and frequency as the original photon but in a different world.
So the total energy in the multiverse will locally have increased by
the number of detectors times the photon energy. The only way to
conserve energy is to detect only one photon of the same energy and
frequency as the original photon.
... or the conservation of energy is something which has to be accounted
in branches, not in the multiverse.
I don't think so. The multiverse is described by the SWE, and that is
just a unitary transformation in Hilbert space. It satisfies energy
conservation by construction (time translation invariance and Noether's
theorem).
You have to renormalize in each branch to get the observed branch-wise
energy conservation -- conservation is automatic only for the multiverse.
Bruce
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